In the Tao Te Ching it says, "those who speak do not know, those who know do not speak."

While I agree with pretty much everything you just said....I've always disagreed with the above quote and have thanked God that many visionaries and enlightened souls thought we were worth being taught/rescued/led to a better world.
I shudder to think of where we would be -just removing a handful of mighty souls.
Dan